Shen, who lives in Richmond, Texas, was surprised to see the keys and employee badge packed away with her Amazon order.

She knew she had to return the items to their owner, Kenneth Delerme, so she shared a photo on Facebook in hopes of connecting with Delerme.

It didn’t take long before the two were able to connect and arrange for her to ship the keys back to Delerme, who lived about 150 miles away near the San Marcos Amazon fulfillment center, but the story doesn’t end there.

Several days later Delerme received his keys and employee badge.

I just got my keys 🔑❤️ Nicole Shen thank you so much for Roman’s drawing and for the key finder, I’ll try not to send…

During the exchange Delerme learned that Shen’s son was in need of a bone marrow transplant.

During their conversation Delerme learned that Shen’s 3-year-old son, Roman, has a rare disease called Shwachman-Diamond syndrome (SDS). According to the National Library of Medicine, SDS is a genetic condition that primarily affects bone marrow, the pancreas, and the skeletal system.

“The blood is the most fatal part,” she explained.

Roman can’t produce white blood cells on his own, which means something as small as a cold could be fatal.

“I was persistent in finding Kenneth and getting his keys back. In return, he wanted to help us save my son’s life,” she told FOX 7. “It is fate those keys got to me because everything since has been magic!”

They haven’t found a match for Roman yet, but they remain hopeful.

They met in the most unlikely way, but it’s because of their chance encounter that Roman’s chances of finding a potential donor have massively increased.